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Haimenkou site is the largest railing-enclosed wooden architecture settlement site on the waterfront in current China. This research conducts degradation assessment of waterlogged wood at Haimenkou site with various methods, including maximum moisture content analysis, basic density analysis, shrinkage measurement, swelling analysis, chemical composition analysis, measurement of compression strength parallel to grain, SEM microstructure analysis and measurement of crystallinity, providing scientific guidance for the subsequent formulation of proper methods of reinforcement.

Blockchain smart contract technology will provide a new management mode for professional athlete contract management, as its main characteristics can be briefly summarized as decentralization, intelligence, efficiency, accuracy, and low cost. At present, the management of professional athletes in China mainly adopts the contract system.However, there are such problems as irregular signing procedures, invalid contract content, and many disputes of the implementation process, which hinders the improvement of professional athletes' competitive level. Based on the technical characteristics and application choices of blockchain smart contract, the current situation of professional athlete contract management is explored, and the application of blockehain smart contract is compared to professional athlete contract management. It finds that the contract management mode of professional athletes based on blockchain smart contracts is conducive to simplifying the contract process, preventing fraud, reducing costs, setting precision and promoting the development of athletes. The professional athlete contract management mode o f blockchain smart contract technology is also designed, the main body positioning on the chain is clarified, the layered application framework and implementation process are structured, the practical obstacles of the model are analyzed, and the implementation path is proposed. [ABSTRACT FROM AUTHOR]

An all-optical encoder based on a 3 × 3 crossed structure was assembled by stacking three polymer fibres. The encoding functions were predicated theoretically and demonstrated experimentally with very good agreement. The total insertion loss of the device is about 1 dB and the extinction ratio is larger than 10 dB. The output state can be controlled by launching optical signals to different input port, and the input state can be identified according to the output state. We believe that the all-optical compact encoder would be used in high-density PICs. [ABSTRACT FROM AUTHOR]